function setActiveStyleSheet(title) {
if (document.getElementsByTagName) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    } 
  } 
}  
}

function getActiveStyleSheet() {
if (document.getElementsByTagName) {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}
}

function getPreferredStyleSheet() {
if (document.getElementsByTagName) {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}
/* addLoadEvent.js
window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}*/

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);


function swapimage(painike) {
  if (painike == 'large') {
    document.images.abc1.src = 'images/textsize_large.gif';
    document.images.abc2.src = 'images/textsize_normal.gif';
  } else if (painike == 'normal') {
    document.images.abc1.src = 'images/textsize_normal.gif';
    document.images.abc2.src = 'images/textsize_large.gif';
  } 
}


//näkyvyyden vaihtofunktio

 var oldLayer="empty",clear=null;
 
 function showLayer(layerName){
 	eval(tasoViite +layerName+tyyliViite+'.visibility="visible"');
 }
 	
 function hideLayer(layerName){
 	eval(tasoViite +layerName+tyyliViite+'.visibility="hidden"');
 }

if (navigator.appName == "Netscape") {
	if (parseInt(navigator.appVersion) >= 5) {
		visible = 'visible';
		hidden = 'hidden';
		tasoViite = 'document.getElementById("';
		tyyliViite = '").style';
	} else {
		visible = 'show';
		hidden = 'hide';
		tasoViite = 'document.layers["';
		tyyliViite = '"]';
	}
} else {
	visible = 'visible';
	hidden = 'hidden';
	tasoViite = 'document.all["';
	tyyliViite = '"].style';
}